google search not working

[starfish11040]

I have done a google search on a string of characters, in quotes, from the heading of an ad currently on craigslist. Nothing found. When I randomly choose other ads and do a search on them, google finds them, even ads that are no longer on craigslist. Why can't google find the ad that I am specifically looking for?

[patio]

It probably needs the whole address not just a portion of the string...
Also on any sales website such as eBay and craigslist these items are put up and taken down at a furious pace...the item may no longer exist.
I don't think this is a browser issue.